The existence of Gatekeeper already causes a huge privacy violation by “requiring” my computer to phone home to verify the signature the first time it launches an application. Everyone should have realized this when Apple’s OCSP responder went down in November 2020 and nobody could launch anything that wasn’t built in to the OS.
According to TFA this kind of verification will now occur every time an application is launched to deter post-verification “tampering” by you, the user. How big of a privacy violation would it have to become to bother you, out of curiosity? If we let this continue we will end up in a future where full “Remote Attestation” of every hardware and software component is required to participate in the Internet. This isn’t hypothetical doom-saying, either: game consoles already work like this. I remember my XBOX360 could detect modified DVD drive firmware, launches of individual pieces of software (e.g. Halo 3 Delta leak), and other types of system modifications, then it would permanently ban that machine from XBOX LIVE. And that was all 15+ years ago.
Just imagine what a gift this will be to law enforcement, for example, once they can go to Apple all like “Hey, Siri, show me all users of Tor Browser around the time of ${BITCOIN_TRANSACTION_ID}”.